package com.epro.dx.widget;

import android.content.Context;
import android.util.AttributeSet;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;
import android.view.View;
import android.widget.ScrollView;

public class MyScollView extends ScrollView
{
    
    /** * 解决ScrollView嵌套ViewPager出现的滑动冲突问题 */
    private boolean canScroll;
    
    private GestureDetector mGestureDetector;
    
    View.OnTouchListener mGestureListener;
    
    public MyScollView(Context context, AttributeSet attrs)
    {
        super(context, attrs);
        mGestureDetector = new GestureDetector(new YScrollDetector());
        canScroll = true;
    }
    
    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev)
    {
        if (ev.getAction() == MotionEvent.ACTION_UP)
            canScroll = true;
        return super.onInterceptTouchEvent(ev) && mGestureDetector.onTouchEvent(ev);
    }
    
    class YScrollDetector extends SimpleOnGestureListener
    {
        @Override
        public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY)
        {
            if (canScroll)
                if (Math.abs(distanceY) >= Math.abs(distanceX))
                    canScroll = true;
                else
                    canScroll = false;
            return canScroll;
        }
    }
}
